ML4866IS Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4866IS Datasheet PDF : 8 Pages
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ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
VIN ................................................................................................... 7V
Voltage on any other pin ......... GND - 0.3V to VIN + 0.3V
Peak Switch Current (IPEAK) ......................................... 2A
Average Switch Current (IAVG) ..................................... 1A
Junction Temperature .............................................. 150ºC
Storage Temperature Range ....................... -65ºC to 150ºC
Lead Temperature (Soldering 10 Sec.) ..................... 260ºC
Thermal Resistance (qJA) .................................... 160ºC/W
ML4866
OPERATING CONDITIONS
Temperature Range
ML4866CS ................................................. 0ºC to 70ºC
ML4866ES .............................................. -20ºC to 70ºC
ML4866IS ............................................... -40ºC to 85ºC
VIN Operating Range ................................... 3.5V to 6.5V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VIN = 5V, L = 50µH, COUT = 100µF, RCOMP = 390kW, CCOMP = 15nF,
TA = Operating Temperature Range (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
REFERENCE
VREF Output Voltage
PWM REGULATOR
0 < I(VREF) < –5µA, IOUT = 0mA
1.22
1.25
fOSC Oscillator Initial Accuracy
IOUT = 200mA, TA = 25°C
100
115
Oscillator Total Variation
Line and Temp
90
130
Soft Start VIN to VOUT Delay
BURST Burst Mode Threshold
3
250
400
BURST PWM Mode Threshold
500
BURST Bias Current
Output Voltage
Line Regulation
IOUT = 200mA
IOUT = 20mA, BURST = 0V
VIN = 4V to 6.5V, TA = 25°C
3.2
3.28
3.3
3.38
Load Regulation
IOUT = 100mA to 500mA,
TA = 25°C
IOUT = 5mA to 100mA,
BURST = 0V, TA = 25°C
Temperature Stability
Total Variation
TA = -40°C to 85°C
Line, Load, Temp
SHUTDOWN
UVLO Startup Threshold
3.2
UVLO Shutdown Threshold
2.9
SHDN Threshold
2
SHDN Bias Current
MAX UNITS
1.27
V
165 kHz
185
kHz
5
ms
mV
850
mV
35
µA
3.4
V
3.48
V
±2
%
±2.5
%
±2.5
%
±1
%
±5
%
3.5
V
3.1
V
V
–5
µA
3
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